]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Detail.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2013 Neil Brown <neilb@suse.de>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Email: <neilb@suse.de>
31 static int cmpstringp(const void *p1
, const void *p2
)
33 return strcmp(* (char * const *) p1
, * (char * const *) p2
);
36 static int add_device(const char *dev
, char ***p_devices
,
37 int *p_max_devices
, int n_devices
)
39 if (n_devices
+ 1 >= *p_max_devices
) {
41 *p_devices
= xrealloc(*p_devices
, *p_max_devices
*
48 (*p_devices
)[n_devices
] = xstrdup(dev
);
52 int Detail(char *dev
, struct context
*c
)
55 * Print out details for an md array
57 int fd
= open(dev
, O_RDONLY
);
58 mdu_array_info_t array
;
59 mdu_disk_info_t
*disks
;
64 char **devices
= NULL
;
65 int max_devices
= 0, n_devices
= 0;
70 char *subarray
= NULL
;
71 int max_disks
= MD_SB_DISKS
; /* just a default */
72 struct mdinfo
*info
= NULL
;
74 struct mdinfo
*subdev
;
76 char *container
= NULL
;
78 int rv
= c
->test
? 4 : 1;
86 pr_err("cannot open %s: %s\n",
87 dev
, strerror(errno
));
90 sra
= sysfs_read(fd
, NULL
, GET_VERSION
| GET_DEVS
|
91 GET_ARRAY_STATE
| GET_STATE
);
93 if (md_get_array_info(fd
, &array
)) {
94 pr_err("%s does not appear to be an md device\n", dev
);
99 external
= (sra
!= NULL
&& sra
->array
.major_version
== -1 &&
100 sra
->array
.minor_version
== -2);
101 inactive
= (sra
!= NULL
&& !md_array_is_active(sra
));
102 st
= super_by_fd(fd
, &subarray
);
103 if (md_get_array_info(fd
, &array
)) {
104 if (errno
== ENODEV
) {
105 if (sra
->array
.major_version
== -1 &&
106 sra
->array
.minor_version
== -1 &&
108 pr_err("Array associated with md device %s does not exist.\n",
116 pr_err("cannot get array detail for %s: %s\n",
117 dev
, strerror(errno
));
123 if (array
.raid_disks
== 0 && external
)
125 if (fstat(fd
, &stb
) != 0 && !S_ISBLK(stb
.st_mode
))
130 max_disks
= st
->max_devs
;
133 /* This is a subarray of some container.
134 * We want the name of the container, and the member
136 dev_t devid
= devnm2devid(st
->container_devnm
);
140 container
= map_dev_preferred(major(devid
), minor(devid
),
142 cfd
= open_dev(st
->container_devnm
);
144 err
= st
->ss
->load_container(st
, cfd
, NULL
);
147 info
= st
->ss
->container_content(st
, subarray
);
151 /* try to load a superblock. Try sra->devs first, then try ioctl */
153 for (d
= 0, subdev
= sra
? sra
->devs
: NULL
;
154 d
< max_disks
|| subdev
;
155 subdev
? (void)(subdev
= subdev
->next
) : (void)(d
++)){
156 mdu_disk_info_t disk
;
165 if (md_get_disk_info(fd
, &disk
) < 0)
167 if (d
>= array
.raid_disks
&&
168 disk
.major
== 0 && disk
.minor
== 0)
172 if (array
.raid_disks
> 0 &&
173 (disk
.state
& (1 << MD_DISK_ACTIVE
)) == 0)
176 dv
= map_dev(disk
.major
, disk
.minor
, 1);
180 fd2
= dev_open(dv
, O_RDONLY
);
185 st
->ss
->free_super(st
);
187 err
= st
->ss
->load_super(st
, fd2
, NULL
);
194 info
= st
->ss
->container_content(st
, subarray
);
196 info
= xmalloc(sizeof(*info
));
197 st
->ss
->getinfo_super(st
, info
, NULL
);
202 if (array
.raid_disks
!= 0 && /* container */
203 (info
->array
.ctime
!= array
.ctime
||
204 info
->array
.level
!= array
.level
)) {
205 st
->ss
->free_super(st
);
208 /* some formats (imsm) have free-floating-spares
209 * with a uuid of uuid_zero, they don't
210 * have very good info about the rest of the
211 * container, so keep searching when
212 * encountering such a device. Otherwise, stop
213 * after the first successful call to
216 if (memcmp(uuid_zero
,
218 sizeof(uuid_zero
)) == 0) {
219 st
->ss
->free_super(st
);
225 /* Ok, we have some info to print... */
226 str
= map_num(pers
, array
.level
);
229 if (array
.raid_disks
) {
231 printf("MD_LEVEL=%s\n", str
);
232 printf("MD_DEVICES=%d\n", array
.raid_disks
);
235 printf("MD_LEVEL=container\n");
236 printf("MD_DEVICES=%d\n", array
.nr_disks
);
239 printf("MD_CONTAINER=%s\n", container
);
240 printf("MD_MEMBER=%s\n", member
);
242 if (sra
&& sra
->array
.major_version
< 0)
243 printf("MD_METADATA=%s\n", sra
->text_version
);
245 printf("MD_METADATA=%d.%d\n",
247 array
.minor_version
);
250 if (st
&& st
->sb
&& info
) {
252 struct map_ent
*mp
, *map
= NULL
;
254 fname_from_uuid(st
, info
, nbuf
, ':');
255 printf("MD_UUID=%s\n", nbuf
+ 5);
256 mp
= map_by_uuid(&map
, info
->uuid
);
257 if (mp
&& mp
->path
&&
258 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
259 printf("MD_DEVNAME=");
260 print_escape(mp
->path
+ 8);
264 if (st
->ss
->export_detail_super
)
265 st
->ss
->export_detail_super(st
);
267 struct map_ent
*mp
, *map
= NULL
;
269 mp
= map_by_devnm(&map
, fd2devnm(fd
));
271 __fname_from_uuid(mp
->uuid
, 0, nbuf
, ':');
272 printf("MD_UUID=%s\n", nbuf
+5);
274 if (mp
&& mp
->path
&&
275 strncmp(mp
->path
, "/dev/md/", 8) == 0) {
276 printf("MD_DEVNAME=");
277 print_escape(mp
->path
+8);
283 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
285 char *sysdev
= xstrdup(mdi
->sys_name
+ 1);
288 path
= map_dev(mdi
->disk
.major
,
290 for (cp
= sysdev
; *cp
; cp
++)
294 if (mdi
->disk
.raid_disk
>= 0)
295 printf("MD_DEVICE_%s_ROLE=%d\n",
297 mdi
->disk
.raid_disk
);
299 printf("MD_DEVICE_%s_ROLE=spare\n",
302 printf("MD_DEVICE_%s_DEV=%s\n",
309 disks
= xmalloc(max_disks
* 2 * sizeof(mdu_disk_info_t
));
310 for (d
= 0; d
< max_disks
* 2; d
++) {
311 disks
[d
].state
= (1 << MD_DISK_REMOVED
);
312 disks
[d
].major
= disks
[d
].minor
= 0;
313 disks
[d
].number
= -1;
314 disks
[d
].raid_disk
= d
/ 2;
317 next
= array
.raid_disks
* 2;
320 for (mdi
= sra
->devs
; mdi
; mdi
= mdi
->next
) {
321 disks
[next
++] = mdi
->disk
;
322 disks
[next
- 1].number
= -1;
324 } else for (d
= 0; d
< max_disks
; d
++) {
325 mdu_disk_info_t disk
;
327 if (md_get_disk_info(fd
, &disk
) < 0) {
328 if (d
< array
.raid_disks
)
329 pr_err("cannot get device detail for device %d: %s\n",
333 if (disk
.major
== 0 && disk
.minor
== 0)
335 if (disk
.raid_disk
>= 0 && disk
.raid_disk
< array
.raid_disks
&&
336 disks
[disk
.raid_disk
* 2].state
== (1 << MD_DISK_REMOVED
) &&
337 ((disk
.state
& (1 << MD_DISK_JOURNAL
)) == 0))
338 disks
[disk
.raid_disk
* 2] = disk
;
339 else if (disk
.raid_disk
>= 0 &&
340 disk
.raid_disk
< array
.raid_disks
&&
341 disks
[disk
.raid_disk
* 2 + 1].state
==
342 (1 << MD_DISK_REMOVED
) &&
343 !(disk
.state
& (1 << MD_DISK_JOURNAL
)))
344 disks
[disk
.raid_disk
* 2 + 1] = disk
;
345 else if (next
< max_disks
* 2)
346 disks
[next
++] = disk
;
349 avail
= xcalloc(array
.raid_disks
, 1);
351 for (d
= 0; d
< array
.raid_disks
; d
++) {
353 if ((disks
[d
*2].state
& (1<<MD_DISK_SYNC
)) ||
354 (disks
[d
*2+1].state
& (1<<MD_DISK_SYNC
))) {
362 mdu_bitmap_file_t bmf
;
363 if (inactive
&& !is_container
)
364 printf("INACTIVE-ARRAY %s", dev
);
366 printf("ARRAY %s", dev
);
367 if (c
->verbose
> 0) {
368 if (array
.raid_disks
)
369 printf(" level=%s num-devices=%d",
370 str
? str
: "-unknown-",
372 else if (is_container
)
373 printf(" level=container num-devices=%d",
376 printf(" num-devices=%d", array
.nr_disks
);
379 printf(" container=%s", container
);
380 printf(" member=%s", member
);
382 if (sra
&& sra
->array
.major_version
< 0)
383 printf(" metadata=%s", sra
->text_version
);
385 printf(" metadata=%d.%d", array
.major_version
,
386 array
.minor_version
);
389 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
390 if (ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 && bmf
.pathname
[0]) {
391 printf(" bitmap=%s", bmf
.pathname
);
394 mdu_bitmap_file_t bmf
;
395 unsigned long long larray_size
;
396 struct mdstat_ent
*ms
= mdstat_read(0, 0);
397 struct mdstat_ent
*e
;
400 devnm
= stat2devnm(&stb
);
401 for (e
= ms
; e
; e
= e
->next
)
402 if (strcmp(e
->devnm
, devnm
) == 0)
404 if (!get_dev_size(fd
, NULL
, &larray_size
))
407 printf("%s:\n", dev
);
410 printf(" Container : %s, member %s\n",
413 if (sra
&& sra
->array
.major_version
< 0)
414 printf(" Version : %s\n",
417 printf(" Version : %d.%d\n",
419 array
.minor_version
);
424 printf(" Creation Time : %.24s\n", ctime(&atime
));
428 printf(" Raid Level : %s\n", str
);
430 printf(" Array Size : %llu%s\n",
432 human_size(larray_size
));
433 if (array
.level
>= 1) {
435 array
.major_version
= sra
->array
.major_version
;
436 if (array
.major_version
!= 0 &&
437 (larray_size
>= 0xFFFFFFFFULL
|| array
.size
== 0)) {
438 unsigned long long dsize
;
440 dsize
= get_component_size(fd
);
442 printf(" Used Dev Size : %llu%s\n",
444 human_size((long long)dsize
<<9));
446 printf(" Used Dev Size : unknown\n");
448 printf(" Used Dev Size : %lu%s\n",
449 (unsigned long)array
.size
,
450 human_size((unsigned long long)
453 if (array
.raid_disks
)
454 printf(" Raid Devices : %d\n", array
.raid_disks
);
455 printf(" Total Devices : %d\n", array
.nr_disks
);
457 ((sra
== NULL
&& array
.major_version
== 0) ||
458 (sra
&& sra
->array
.major_version
== 0)))
459 printf(" Preferred Minor : %d\n", array
.md_minor
);
460 if (sra
== NULL
|| sra
->array
.major_version
>= 0)
461 printf(" Persistence : Superblock is %spersistent\n",
462 array
.not_persistent
? "not " : "");
464 /* Only try GET_BITMAP_FILE for 0.90.01 and later */
465 if (ioctl(fd
, GET_BITMAP_FILE
, &bmf
) == 0 && bmf
.pathname
[0]) {
466 printf(" Intent Bitmap : %s\n", bmf
.pathname
);
468 } else if (array
.state
& (1<<MD_SB_BITMAP_PRESENT
))
469 printf(" Intent Bitmap : Internal\n\n");
472 printf(" Update Time : %.24s\n", ctime(&atime
));
473 if (array
.raid_disks
) {
474 static char *sync_action
[] = {
475 ", recovering", ", resyncing",
476 ", reshaping", ", checking" };
478 if (avail_disks
== array
.raid_disks
)
480 else if (!enough(array
.level
, array
.raid_disks
,
481 array
.layout
, 1, avail
))
486 printf(" State : %s%s%s%s%s%s \n",
487 (array
.state
& (1 << MD_SB_CLEAN
)) ?
488 "clean" : "active", st
,
489 (!e
|| (e
->percent
< 0 &&
490 e
->percent
!= RESYNC_PENDING
&&
491 e
->percent
!= RESYNC_DELAYED
)) ?
492 "" : sync_action
[e
->resync
],
493 larray_size
? "": ", Not Started",
494 (e
&& e
->percent
== RESYNC_DELAYED
) ?
496 (e
&& e
->percent
== RESYNC_PENDING
) ?
498 } else if (inactive
&& !is_container
) {
499 printf(" State : inactive\n");
501 if (array
.raid_disks
)
502 printf(" Active Devices : %d\n", array
.active_disks
);
503 if (array
.working_disks
> 0)
504 printf(" Working Devices : %d\n",
505 array
.working_disks
);
506 if (array
.raid_disks
) {
507 printf(" Failed Devices : %d\n", array
.failed_disks
);
508 printf(" Spare Devices : %d\n", array
.spare_disks
);
511 if (array
.level
== 5) {
512 str
= map_num(r5layout
, array
.layout
);
513 printf(" Layout : %s\n",
514 str
? str
: "-unknown-");
516 if (array
.level
== 6) {
517 str
= map_num(r6layout
, array
.layout
);
518 printf(" Layout : %s\n",
519 str
? str
: "-unknown-");
521 if (array
.level
== 10) {
523 print_r10_layout(array
.layout
);
526 switch (array
.level
) {
532 if (array
.chunk_size
)
533 printf(" Chunk Size : %dK\n\n",
534 array
.chunk_size
/1024);
537 printf(" Rounding : %dK\n\n",
538 array
.chunk_size
/1024);
544 if (array
.raid_disks
) {
547 mdi
= sysfs_read(fd
, NULL
, GET_CONSISTENCY_POLICY
);
549 char *policy
= map_num(consistency_policies
,
550 mdi
->consistency_policy
);
553 printf("Consistency Policy : %s\n\n",
558 if (e
&& e
->percent
>= 0) {
559 static char *sync_action
[] = {
560 "Rebuild", "Resync", "Reshape", "Check"};
561 printf(" %7s Status : %d%% complete\n",
562 sync_action
[e
->resync
], e
->percent
);
566 if ((st
&& st
->sb
) && (info
&& info
->reshape_active
)) {
568 This is pretty boring
569 printf(" Reshape pos'n : %llu%s\n",
570 (unsigned long long) info
->reshape_progress
<< 9,
571 human_size((unsigned long long)
572 info
->reshape_progress
<< 9));
574 if (info
->delta_disks
!= 0)
575 printf(" Delta Devices : %d, (%d->%d)\n",
577 array
.raid_disks
- info
->delta_disks
,
579 if (info
->new_level
!= array
.level
) {
580 str
= map_num(pers
, info
->new_level
);
581 printf(" New Level : %s\n",
582 str
? str
: "-unknown-");
584 if (info
->new_level
!= array
.level
||
585 info
->new_layout
!= array
.layout
) {
586 if (info
->new_level
== 5) {
587 str
= map_num(r5layout
,
589 printf(" New Layout : %s\n",
590 str
? str
: "-unknown-");
592 if (info
->new_level
== 6) {
593 str
= map_num(r6layout
,
595 printf(" New Layout : %s\n",
596 str
? str
: "-unknown-");
598 if (info
->new_level
== 10) {
599 printf(" New Layout : near=%d, %s=%d\n",
600 info
->new_layout
& 255,
601 (info
->new_layout
& 0x10000) ?
603 (info
->new_layout
>> 8) & 255);
606 if (info
->new_chunk
!= array
.chunk_size
)
607 printf(" New Chunksize : %dK\n",
608 info
->new_chunk
/1024);
610 } else if (e
&& e
->percent
>= 0)
613 st
->ss
->detail_super(st
, c
->homehost
);
615 if (array
.raid_disks
== 0 && sra
&&
616 sra
->array
.major_version
== -1 &&
617 sra
->array
.minor_version
== -2 &&
618 sra
->text_version
[0] != '/') {
619 /* This looks like a container. Find any active arrays
620 * That claim to be a member.
622 DIR *dir
= opendir("/sys/block");
625 printf(" Member Arrays :");
627 while (dir
&& (de
= readdir(dir
)) != NULL
) {
630 int nlen
= strlen(sra
->sys_name
);
632 if (de
->d_name
[0] == '.')
635 "/sys/block/%s/md/metadata_version",
637 if (load_sys(path
, vbuf
, sizeof(vbuf
)) < 0)
639 if (strncmp(vbuf
, "external:", 9) ||
640 !is_subarray(vbuf
+ 9) ||
641 strncmp(vbuf
+ 10, sra
->sys_name
, nlen
) ||
642 vbuf
[10 + nlen
] != '/')
644 devid
= devnm2devid(de
->d_name
);
646 map_dev_preferred(major(devid
),
655 if (array
.raid_disks
)
656 printf(" Number Major Minor RaidDevice State\n");
658 printf(" Number Major Minor RaidDevice\n");
662 for (d
= 0; d
< max_disks
* 2; d
++) {
664 mdu_disk_info_t disk
= disks
[d
];
666 if (d
>= array
.raid_disks
* 2 &&
667 disk
.major
== 0 && disk
.minor
== 0)
669 if ((d
& 1) && disk
.major
== 0 && disk
.minor
== 0)
672 if (d
== array
.raid_disks
*2)
674 if (disk
.number
< 0 && disk
.raid_disk
< 0)
675 printf(" - %5d %5d - ",
676 disk
.major
, disk
.minor
);
677 else if (disk
.raid_disk
< 0 ||
678 disk
.state
& (1 << MD_DISK_JOURNAL
))
679 printf(" %5d %5d %5d - ",
680 disk
.number
, disk
.major
, disk
.minor
);
681 else if (disk
.number
< 0)
682 printf(" - %5d %5d %5d ",
683 disk
.major
, disk
.minor
, disk
.raid_disk
);
685 printf(" %5d %5d %5d %5d ",
686 disk
.number
, disk
.major
, disk
.minor
,
689 if (!c
->brief
&& array
.raid_disks
) {
690 if (disk
.state
& (1 << MD_DISK_FAULTY
)) {
692 if (disk
.raid_disk
< array
.raid_disks
&&
696 if (disk
.state
& (1 << MD_DISK_ACTIVE
))
698 if (disk
.state
& (1 << MD_DISK_SYNC
)) {
700 if (array
.level
== 10 &&
701 (array
.layout
& ~0x1FFFF) == 0) {
702 int nc
= array
.layout
& 0xff;
703 int fc
= (array
.layout
>> 8) & 0xff;
706 array
.raid_disks
% copies
== 0 &&
708 /* We can divide the devices
711 set
= disk
.raid_disk
% copies
;
712 printf(" set-%c", set
+ 'A');
716 if (disk
.state
& (1 << MD_DISK_REMOVED
))
718 if (disk
.state
& (1 << MD_DISK_WRITEMOSTLY
))
719 printf(" writemostly");
720 if (disk
.state
& (1 << MD_DISK_FAILFAST
))
722 if (disk
.state
& (1 << MD_DISK_JOURNAL
))
725 ((1 << MD_DISK_ACTIVE
) | (1 << MD_DISK_SYNC
) |
726 (1 << MD_DISK_REMOVED
) | (1 << MD_DISK_FAULTY
) |
727 (1 << MD_DISK_JOURNAL
))) == 0) {
729 if (disk
.raid_disk
< array
.raid_disks
&&
731 printf(" rebuilding");
736 dv
= map_dev_preferred(disk
.major
, disk
.minor
, 0, c
->prefer
);
739 n_devices
= add_device(dv
, &devices
,
740 &max_devices
, n_devices
);
747 if (spares
&& c
->brief
&& array
.raid_disks
)
748 printf(" spares=%d", spares
);
749 if (c
->brief
&& st
&& st
->sb
)
750 st
->ss
->brief_detail_super(st
);
752 st
->ss
->free_super(st
);
754 if (c
->brief
&& c
->verbose
> 0 && devices
) {
755 qsort(devices
, n_devices
, sizeof(*devices
), cmpstringp
);
756 printf("\n devices=%s", devices
[0]);
757 for (d
= 1; d
< n_devices
; d
++)
758 printf(",%s", devices
[d
]);
763 !enough(array
.level
, array
.raid_disks
, array
.layout
, 1, avail
))
771 for (d
= 0; d
< n_devices
; d
++)
778 int Detail_Platform(struct superswitch
*ss
, int scan
, int verbose
, int export
, char *controller_path
)
780 /* display platform capabilities for the given metadata format
781 * 'scan' in this context means iterate over all metadata types
786 if (ss
&& export
&& ss
->export_detail_platform
)
787 err
= ss
->export_detail_platform(verbose
, controller_path
);
788 else if (ss
&& ss
->detail_platform
)
789 err
= ss
->detail_platform(verbose
, 0, controller_path
);
792 pr_err("%s metadata is platform independent\n",
793 ss
->name
? : "[no name]");
796 pr_err("specify a metadata type or --scan\n");
803 for (i
= 0; superlist
[i
]; i
++) {
804 struct superswitch
*meta
= superlist
[i
];
809 pr_err("checking metadata %s\n",
810 meta
->name
? : "[no name]");
811 if (!meta
->detail_platform
) {
813 pr_err("%s metadata is platform independent\n",
814 meta
->name
? : "[no name]");
815 } else if (export
&& meta
->export_detail_platform
) {
816 err
|= meta
->export_detail_platform(verbose
, controller_path
);
818 err
|= meta
->detail_platform(verbose
, 0, controller_path
);